Trace number 2668628

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerobjective functionCPU timeWall clock time
PB/CT 0.1Wrong UNSAT 0.170973 0.171822

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/mps-v2-20-10/
MIPLIB/miplib/normalized-mps-v2-20-10-p0548.opb
MD5SUM38a2c469f9dc1120b8fe634a693ac03d
Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmarkOPT
Best value of the objective obtained on this benchmark8691
Best CPU time to get the best result obtained on this benchmark0.140977
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 10829
Optimality of the best value was proved NO
Number of variables548
Total number of constraints166
Number of constraints which are clauses40
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints126
Minimum length of a constraint2
Maximum length of a constraint143
Number of terms in the objective function 416
Biggest coefficient in the objective function 11000
Number of bits for the biggest coefficient in the objective function 14
Sum of the numbers in the objective function 96797
Number of bits of the sum of numbers in the objective function 17
Biggest number in a constraint 11000
Number of bits of the biggest number in a constraint 14
Biggest sum of numbers in a constraint 96797
Number of bits of the biggest sum of numbers17
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Solver Data 

0.00/0.00	c PB/CT 0.1 http://www.residual.se/pbct
0.00/0.00	c Based on OpenSMT/CT 20091015
0.00/0.00	c constraints 114/0 clauses 43/0 units 18
0.00/0.00	c vars 548
0.00/0.00	c objective 416 + 0
0.09/0.12	c 0.118981 12.6016 0 0
0.09/0.17	s UNSATISFIABLE

Verifier Data 

ERROR: no interpretation found !

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2668628-1276437409/watcher-2668628-1276437409 -o /tmp/evaluation-result-2668628-1276437409/solver-2668628-1276437409 -C 1800 -W 2000 -M 1800 HOME/pbct --model HOME/instance-2668628-1276437409.opb 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2000 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.99 0.97 0.99 3/106 23149
/proc/meminfo: memFree=1870596/2059040 swapFree=4140228/4192956
[pid=23149] ppid=23147 vsize=2340 CPUtime=0
/proc/23149/stat : 23149 (pbct) R 23147 23149 21207 0 -1 4202496 287 0 0 0 0 0 0 0 20 0 1 0 19342663 2396160 209 1992294400 134512640 136485738 4294804944 18446744073709551615 135850441 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/23149/statm: 585 209 157 482 0 101 0

[startup+0.020218 s]
/proc/loadavg: 0.99 0.97 0.99 3/106 23149
/proc/meminfo: memFree=1870596/2059040 swapFree=4140228/4192956
[pid=23149] ppid=23147 vsize=4176 CPUtime=0.01
/proc/23149/stat : 23149 (pbct) R 23147 23149 21207 0 -1 4202496 728 0 0 0 1 0 0 0 20 0 1 0 19342663 4276224 650 1992294400 134512640 136485738 4294804944 18446744073709551615 135850441 0 0 4096 16387 0 0 0 17 1 0 0 0
/proc/23149/statm: 1044 651 198 482 0 560 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 4176

[startup+0.101226 s]
/proc/loadavg: 0.99 0.97 0.99 3/106 23149
/proc/meminfo: memFree=1870596/2059040 swapFree=4140228/4192956
[pid=23149] ppid=23147 vsize=12092 CPUtime=0.09
/proc/23149/stat : 23149 (pbct) R 23147 23149 21207 0 -1 4202496 2665 0 0 0 9 0 0 0 20 0 1 0 19342663 12382208 2587 1992294400 134512640 136485738 4294804944 18446744073709551615 134861195 0 0 4096 16387 0 0 0 17 1 0 0 0
/proc/23149/statm: 3023 2587 210 482 0 2539 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 12092

Solver just ended. Dumping a history of the last processes samples

Child status: 0
Real time (s): 0.171822
CPU time (s): 0.170973
CPU user time (s): 0.159975
CPU system time (s): 0.010998
CPU usage (%): 99.5059
Max. virtual memory (cumulated for all children) (KiB): 12092

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.159975
system time used= 0.010998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 2883
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 2
involuntary context switches= 9

runsolver used 0 second user time and 0.012998 second system time

The end

Launcher Data 

Begin job on node009 at 2010-06-13 15:56:49
IDJOB=2668628
IDBENCH=1866
IDSOLVER=1170
FILE ID=node009/2668628-1276437409
PBS_JOBID= 11173311
Free space on /tmp= 62444 MiB

SOLVER NAME= PB/CT 0.1
BENCH NAME= PB06//final/normalized-PB06/OPT-SMALLINT/mps-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-p0548.opb
COMMAND LINE= HOME/pbct --model BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2668628-1276437409/watcher-2668628-1276437409 -o /tmp/evaluation-result-2668628-1276437409/solver-2668628-1276437409 -C 1800 -W 2000 -M 1800  HOME/pbct --model HOME/instance-2668628-1276437409.opb

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 38a2c469f9dc1120b8fe634a693ac03d
RANDOM SEED=2124528333

node009.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.199
cache size	: 2048 KB
physical id	: 0
siblings	: 1
core id		: 0
cpu cores	: 1
apicid		: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm constant_tsc pni monitor ds_cpl cid cx16 xtpr
bogomips	: 6000.39
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.199
cache size	: 2048 KB
physical id	: 3
siblings	: 1
core id		: 0
cpu cores	: 1
apicid		: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm constant_tsc pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5599.44
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2059040 kB
MemFree:       1871000 kB
Buffers:          6552 kB
Cached:         104056 kB
SwapCached:       5328 kB
Active:          23288 kB
Inactive:        99392 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2059040 kB
LowFree:       1871000 kB
SwapTotal:     4192956 kB
SwapFree:      4140228 kB
Dirty:            1880 kB
Writeback:           0 kB
AnonPages:       10984 kB
Mapped:          12876 kB
Slab:            43280 kB
PageTables:       4060 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:   5222476 kB
Committed_AS:   180580 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    264948 kB
VmallocChunk: 34359471699 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 62440 MiB
End job on node009 at 2010-06-13 15:56:49